A facile method for rapid preparation of individual titania nanotube powders by a two-step process

被引：7
作者：
Liao, Yulong [1 ]
Que, Wenxiu [1 ]
Zhang, Jin [1 ]
Zhong, Peng [1 ]
He, Yucheng [1 ]
机构：
[1] Xi An Jiao Tong Univ, Sch Elect & Informat Engn, Elect Mat Res Lab, Xian 710049, Shaanxi, Peoples R China
来源：
MATERIALS RESEARCH BULLETIN | 2011年 / 46卷 / 03期
基金：
中国国家自然科学基金; 高等学校博士学科点专项科研基金;
关键词：
Semiconductors; Nanostructures; Electron microscopy; Catalytic properties; PHOTOCATALYTIC OXIDATION; TIO2; ARRAYS; FABRICATION; ANODIZATION; FILMS; DIOXIDE;
D O I：
10.1016/j.materresbull.2010.12.018
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Present study reports a facile method for preparing individual TiO2 nanotube (NT) powders by a two-step process, which includes that TiO2 NT bundles are rapidly synthesized by an electro-chemical process in perchlorate-containing electrolyte and then they are disaggregated into individual TiO2 NT powders under an assistance of ultrasonic oscillation treatment. Morphological and microstructural properties of the individual TiO2 NT powders are characterized by field emission scanning electron microscopy and transmission electron microscopy. Results indicate that the individual TiO2 NT powders, which have an outer diameter of about 20 nm and an inner diameter of 10 nm, can be easily obtained from the disaggregation of the TiO2 NT-bundles by combining the electrochemical process with the physical processing. Furthermore, the individual TiO2 NT powders exhibit higher photocatalytic activity than the TiO2 NT-bundle powders. (C) 2010 Elsevier Ltd. All rights reserved.
引用
收藏
页码：478 / 482
页数：5
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